Water-supplying device for rock-drilling machines.



' E. MLWESTON WATER SUPPLYING DEVIOE'FOR ROCK DRILLING MACHINES.

APPLICATION FILED FEB. 18, 1 908.

Patented Sept. 29, 1908.

-mounted round said sleeve.

EUSTAGE MQRIARTY WESTON, OF BRAKPAN, TRANSVAAL.

WATER-SUPPLYING DEVICE FOR ROCK-DRILLING- MACHINES.

Specification of Letters Patent.

Patented Sept. 29, 1908.

Application filed February 18, 1908. Serial No. 416,596.

To all whom it may concern:

Be it known that I, EUSTAOE MORIARTY WESTON, a subject of the King of Great Britain, and resident of Brakpan, Transvaal, have invented certain new and useful Imrovements in Water-Supplying Devices for ock-Drilling Machines, of which the following is a specification. i

This invention relates to water supplying devices or attachments for rock-drills or rockdrilling machines.

In the specifications of certain prior pat-' ents granted to me under No. 842598 dated 29th January, 1907, and No. 849445 dated 9th April, 1907, I describe an attachment or device for supplying water through the drill steel or hit of a rock-drilling machine to the hole being drilled, which consists of a sleeve non-rotatably mounted round the drill steel or bit and a loose water supply ring or swivel This construction, necessary when the drill steel or bit is rotated in one direction only, is not necessary when an oscillatory motion is imparted to the drill steel or hit to change the position of its cutting edge or edges in relation to the rock.

The object of my present invention is to provide a device or attachment especially applicable for those types of drills or machines in which such oscillatory motion is imparted to the drill or hit.

The invention is equally applicable to hammer or piston drills in which an oscillatory motion is imparted to the drill steel or hit.

The invention will now be fully described by aid of the accompanying drawings in which Figure 1 is a part-sectional elevation of the shank end of a drill steel or bit with the water supplying attachment in operative position thereon. Fig. 2 is a transverse section of the drill steel. Fig. 3 is a transverse section of Fi 1 on the line 0ca:, and Fig. 4 is a view simifiar to Fig. 3 but illustrating a slight modification of the invention.

1 represents the drill steel or bit with a hole 2 extending through it, preferably from end to end. A portion 3 of the shank of the steel or bit 1 is made taper in a rearward direction. This tapered portion 3 of the shank may, as shown in Figs. 1 and 3, be of circular cross-section. In the tapered portion 3 is formed one or a plurality of transverse and forwardly inclined holes or passages 4 communicating at their inner ends with the longitudinal and axial hole 2 and at their outer ends terminating in the surface of the tapered portion 3.

.Around the tapered portion 3 of the shank (or it may be any suitable portion thereof) is arranged a sleeve 5 which internally is bored out or made to fit the tapered portion 3 of the steel or bit 1, that is to say if the tapered portion 3 ofthe steel is, as shown in Fi 3, of circular transverse section, then the% re of or hole'in the sleeve 5 is of corresponding circular cross-section.

Inside the sleeve 5 and surrounding the tapered portion 3 is an annular recess 7 with which the outer end (or ends) of the transverse forwardly inclined hole 4 (or holes) communicates.

The sleeve 5 is construced with a tail piece or projection 8 (through which is formed a passage 9 communicating with the recess 7) for attaching thereto, by means of an ordinary hose clamp 10, or in any other suitable manner, a hose or other suitable flexible pipe 11', which serves for conducting water or other suitable liquid to the annular recess 7 in the sleeve 5.

The hose or flexible pipe 11 communicates sages, as for example by permittinga quantity of the compressed air or operating fluid to pass from the machine along the drill steel, for which latter purpose the longitudinal hole 2 may, as shown in Fig. 1, be extended beyond the transverse hole 4 in a rearward direction, so as to communicate with the cylinder of the machine; or such compressed air supply may be provided in any other convenient manner and either the live or exhaust air be utilized for the purpose.

The sleeve 5 as shown is fashioned in one piece with (it may be a separatepart attached to the sleeve in any convenient manner) a handle or projection 12, (or handles or projections), for imparting by hand the oscillatory motion to the drill steel or bit 1, through the medium of said sleeve 5.

In Fig. 4 I show a modification in which the tapered portion 13 of the drill steel or bit is made of hexagonal cross-section. In this case the bore or tapered hole in the sleeve 16 is made of corresponding hexagonal transverse section. It will be apparent that said tapered portion 13 and bore of the sleeve 16 may be made of any other suitable polygonal cross-section.

An advantage of the above described constructions is that the drill steel or bit can be oscillated independently of the machine. When oscillated independently of the machine that portion 2' of the bit shank which enters the machine may be rounded as sh own in Fig. 1, or when the steel or bit is oscillated through the medium of the front head bushing or other part of the machine, said portion 2 of the shank may be made of any desired polygonal transverse section, corresponding to the hole in which it fits.

What I claim as my invention and desire to protect by Letters Patent is 1. In a device such as described, in combination, a drill steel or bit the shank of which has a tapered portion and provided with a longitudinal hole and a transverse hole communicating with said longitudinal hole and communicating with the surface of said tapered portion, and a sleeve having a tapered bore corresponding to the tapered portion of the steel or bit shank, the said tapered portion of the shank fitting in the said tapered bore of the sleeve, said shank and sleeve forming a recess between them in communication with the transverse hole, and means non-rotatably attached to the sleeve for conveying water to said recess.

2. In a device such as described, in combination, a drill steel or bit, the shank of which has a tapered portion and provided with a longitudinal hole and a transverse hole communicating with said longitudinal hole and terminating at the surface of said tapered portion, and a sleeve having a tapered bore corresponding to the tapered portion of the steel or bit shank, said tapered portion of the shank fitting in said tapered bore of the sleeve and a portion of said sleeve bore being enlarged to form a water space surrounding the tapered portion of the bit shank and in communication with the transverse hole, and means movable with the sleeve for conveying water to said water space.

3. In a device such as described, in combination, a drill steel or bit, the shank of which has a tapered portion and provided with alongitudinal hole and a transverse hole communicating with said longitudinal hole and terminating at the surface of said tapered portion, and a sleeve having a tapered bore corresponding to the tapered portion of the steel or bit shank, said tapered portion of the shank fitting in said tapered bore of the sleeve and a portion of said sleeve here being enlarged to form a water space surrounding the tapered portion of the bit shank and in communication with the transverse hole, and means for conducting water to the water space comprising a projection formed on the sleeve, said projection having a hole in communication with the water space, a flexible pipe in communication with said hole and means for securing said flexible pipe to said projection.

4. In a device such as described, in combination, a drill steel or hit the shank of which has a tapered portion and provided with a longitudinal hole and a transverse hole eon]- municating with said. longitudinal hole and communicating with the surface of said ta pered portion, and a sleeve having a tapered bore corresponding to the tapered portion of the steel or bit shank, the said tapered por tion of the shank fitting in the said tapered bore of the sleeve, said shank and sleeve having a recess between them in eommunieation with the transverse hole, means non-rotatably attached to the sleeve for conveying water to said recess, and means whereby the sleeve may be rocked to oscillate the drill steel or bit, as set forth.

5. In a device such as described, in combination, a drill steel or bit, the shank of which has a tapered portion and provided with a longitudinal hole and a transverse hole communicating with said longitudinal hole and terminating at the surface of said tapered portion, and a sleeve having a tapered. bore corresponding to the tapered portion of the steel or bit shank, said tapered portion of the shank fitting in said tapered bore of the sleeve and a portion of said sleeve bore being enlarged to form a water space surrounding the tapered portion of the bit shank and in communieation with the transverse hole, means movable with the sleeve for conveying water to said water space, and means whereby the sleeve may be rocked to oscillate the drill steel or bit, as set forth.

6. In a device such as described, in combination, a drill steel or bit the shank of which. has a tapered portion and provided with a longitudinal hole and a transverse hole communicating with said longitudinal hole and terminating at the surface of said tapered portion, and a sleeve having a tapered bore corresponding to the tapered portion of the steel or bit shank, said tapered portion of the. shank fitting in said tapered bore of the sleeve and a portion of said sleeve bore being enlarged to form a water space surrounding the tapered portion of the bit shank and in communication with the transverse hole, means for conducting water to the water space comprising a projection formed on the sleeve, said projection having a hole in communication with the water space, a flexible pipe in communication with said hole, means for securing said flexible ipe to said projection, and means whereby t he sleeve may be rocked to oscillate the drill steel or bit, as set forth.

7. In a device such as described, in combination, a drill steel or bit the shank of which has a ta ered portion and provided with a longitudinal hole and a transverse hole communicating with said longitudinal hole and terminating at the surface of said tapered portion, and a sleeve having a tapered bore corresponding to the tapered portion of thesteel or bit shank, said tapered portion of the shank fitting in said tapered bore of the sleeve, the said tapered portion of the shank and sleeve having an annular space between them in communication with the transverse hole, means rigid with the sleeve for conveying water to sa1d space, and means rigid upon the sleeve whereby it may be rocked to 1mpart oscillatory motion to thesteel or bit.

8. In a device such as described, in combination, a drill steel or bit the shank of which i has a tapered ortion and provided with a longitudinal ho e and a transverse forwardly inclined hole communicating with said longitudinal hole and terminating in the surface of said ta ered portion, and a sleeve having a tapered ore corresponding to the tapered portion of the steel or bit shank, said tapered portion of the shank fitting in said tapered ore of the sleeve and a portion of saids being enlarged to form a water s ace surrounding the tapered portion of the it shank and in communication with the transverse forwardly inclined hole, means for conveying water to said water space comprising a projection formed on the sleeve, said projection having a hole leading to the water space, a flexible pipe in communication with said latter hole, means for securing said flexible pipe to said projection, and means comprising a projection rigid upon said sleeve whereby it may be rocked to oscillate the drill steel or bit. In witness whereof I have hereunto set my hand in the presence of two subscribing witnesses.

EUSTACE MORIARTY WESTON. Witnesses:

OHAs. OVENDALE, R. OVENDALE. 

